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RISEffect of Engine Operating Conditions and Lubricant Rheology on the Distribution of Losses in an Internal Combustion Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: With new legislation coming into place for the reduction in tail-pipe emissions, the OEMs are in constant pressure to meet these demands and have invested heavily in the development of new ...
Experimental and Theoretical Study of Instantaneous Engine Valve Train Friction
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A new method has been developed to directly measure valve train friction as a function of crank angle using specially designed timing belt pulley torque transducers fitted to the inlet and ...
Experimental Evaluation of Piston-Assembly Friction Under Motored and Fired Conditions in a Gasoline Engine
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Piston-assembly friction measurement has been carried out on a single-cylinder gasoline engine using the IMEP (indicated mean effective pressure) method at realistic engine speeds and loads without ...
A Boundary Lubrication Friction Model Sensitive to Detailed Engine Oil Formulation in an Automotive Cam/Follower Interface
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Theoretical studies have shown that in severe operating conditions, valve train friction losses are significant and have an adverse effect on fuel efficiency. However, recent studies have shown ...